Delta-butyrolactams, thereof, processes for the preparation thereof and their medical use
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United States of America Patent
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Nov 7, 1989
Issued Date -
N/A
app pub date -
Apr 27, 1988
filing date -
Aug 24, 1984
priority date (Note) -
Expired
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Abstract
Purified Clausenamide of the formula ##STR1## is obtained by extraction of leaves of Clausena lansium followed by purification, Reduction products, ethers, etc. can be produced. The compounds are effective in treating hypoxia and amnesia.
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